She'd asked why he didn't use the watering system and he'd said that he liked the time of night between people settling down for the evening and the monsters rising.
Dawn has a suspicion that he enjoyed the simple domesticity of the task. That he felt like he was contributing to her care.
She smiled to herself. Spike didn't need to prove anything; he'd always held a piece of her heart.
leni_ba — xmas challenge: spike and dawn in the summer buffy was dead